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Regular Copolyamides VII. Water Adsorption in Regular Copolyoxamides

Tirrell, D. and Grossman, S. and Vogl, O. (1979) Regular Copolyamides VII. Water Adsorption in Regular Copolyoxamides. Makromolekulare Chemie, 180 (3). pp. 721-736. ISSN 0025-116X. doi:10.1002/macp.1979.021800316.

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Water absorption at 93% relative humidity and 25°C was determined for 12 regular aliphatic/aromatic copolyoxamides. The equilibrium water absorption ranges from 7°C to 30%, varied with the polymer structure and is highest in polymers with high amide concentration. The water absorption is reversible and seems to consist of a two-step process, rapid absorption of water by polymer followed by a slower second stage as equilibrium is approached. These polymers have low crystallinity and the water absorption does not occur in crystalline regions. All water is bound to the polymer: it may be freed by heating the hydrated polymer above 100°C. but rebinds completely at room temperature.

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Tirrell, D.0000-0003-3175-4596
Additional Information:©1979 Alber. Now owed by Wiley. Manuscript received: July 17, 1978. Article first published online: 12 Mar. 2003. This work was supported in part by a grant from the National Science Foundation Materials Research Laboratory.
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Official Citation:Tirrell, D., Grossman, S. and Vogl, O. (1979), Regular copolyamides, 7. Water absorption in regular copolyoxamides. Makromol. Chem., 180: 721–736. doi: 10.1002/macp.1979.021800316
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ID Code:55057
Deposited By: Anne Hormann
Deposited On:24 Feb 2015 00:34
Last Modified:10 Nov 2021 20:41

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